LT6658BIDE-1.8#PBF

Overview

The LT6658BIDE-1.8#PBF is a precision dual output voltage reference from Analog Devices, packaged in a 16-lead DFN (4mm × 3mm). It provides a fixed 1.8V output with an initial accuracy of ±0.1% and a temperature coefficient of 20 ppm/°C. The device operates within a junction temperature range of -40°C to 85°C and supports a maximum input voltage of 36V. Output 1 delivers up to 150mA sourcing current, while Output 2 provides up to 50mA. Both outputs feature Kelvin sense connections for high load regulation.

Feature Summary

• Dual independent outputs with identical precision specifications that track each other over temperature and load variations.
• Combines the performance of a low drift voltage reference with a linear regulator capability.
• Kelvin sense connections enable precise load regulation even under heavy loading conditions.
• Separate supply pins allow for power consumption reduction and buffer amplifier isolation.

Applications

• Driving reference inputs of high resolution ADCs and DACs
• Powering microcontrollers and supporting circuitry
• Data acquisition systems requiring stable references

Procurement Notes

Verify the specific suffix #PBF indicates RoHS compliance when ordering. Confirm the package type matches the design requirements, as this part uses the DFN form factor distinct from the MSOP variant. Ensure the B-grade specification meets the required accuracy and drift parameters for the target application environment.

Selection Notes

Select this component when a dual-output reference with high current capability is needed. The B-grade offers a balance of cost and performance with 20 ppm/°C drift. Consider the DFN package for thermal management needs. Verify input voltage headroom requirements against the dropout characteristics for the intended load currents.

Part Context

This part belongs to the LT6658 family of Refulators, which integrate precision reference and linear regulator functions. The 'B' designation indicates the B-grade accuracy tier, while 'IDE' specifies the 1.8V output voltage and DFN package. It serves as a compact solution for applications requiring multiple stable voltage rails from a single source.

Replacement Considerations

LT6658BHDE-1.8#PBF is a confirmed substitute with the same electrical specifications but a wider operating temperature range (-40°C to 125°C).